. British plants : their biology and ecology. Plants; Plant ecology. 132 BRITISH PLANTS with stellate hairs, but their function is doubtful, since, as far as we know, no digestive fluids are poured out over the bodies of the victims. Our English fly-catchers are poor things compared with the insectivorous plants of the Tropics and the Southern Hemisphere. The mechanism of the pitcher- plant, Nepenthes, is one of the wonders of the vege- table world, while in Venus's fly-trap, Dioncea, the two halves of the leaf snap to- gether as soon as an insect touches one of the trigger-like hairs on its s
. British plants : their biology and ecology. Plants; Plant ecology. 132 BRITISH PLANTS with stellate hairs, but their function is doubtful, since, as far as we know, no digestive fluids are poured out over the bodies of the victims. Our English fly-catchers are poor things compared with the insectivorous plants of the Tropics and the Southern Hemisphere. The mechanism of the pitcher- plant, Nepenthes, is one of the wonders of the vege- table world, while in Venus's fly-trap, Dioncea, the two halves of the leaf snap to- gether as soon as an insect touches one of the trigger-like hairs on its surface. 4. Symbiotic Plants (Gr. syn, together ; bios, life).—We have already considered one case of intimate asso- ciation between two living plants — the parasite and the host (p. 125). But in this case the advantage is entirelyone-sided. The parasite lives at the expense of the host; it takes everything, and gives nothing in return. In symbiosis, however, two plants live to- gether, but the relation is one of partnership, both plants benefiting equally by the associa- tion. The most remarkable instance of symbiosis is the lichen, a dual plant, consisting of a fungus and an alga living together, and forming what appears to be one plant. The alga, being green, makes starch ; the fungus makes use of this, and in return not only give*- shelter and protection to the alga, but tenaciously stores up within its slimy walls a supply of water which keeps. FlG. 46.—Utricularia vulgaris (Bladder- wort), showing Bladders on Sub- merged Dissected Leaves and absence of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bevis, James Frederick; Jeffery, Henry John. London : A. Rivers
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisher, booksubjectplants
